Abrading machine



ofrl Gear 5y Jan- 8 s R. R. AMBLER ET AL.

ABRADINGv MACHINE Filed A ril l Jaan. 8 1924.

R. R, AMBLER ET AL.

ARADING MACHINE 3 Sheets-Sheet 2 Hilg.

Jan. 8 1924.

R. R. AMBLER ET AL ABRADING MACHINE Filed pril lA .3 heets-5heetPatented Jan. 8, 1924.

ROBERT B.. .AMBLER AND GRUB-GE F.

GOGDRICH CDMPANY, F NEW WLSON, F AHB-QN. OHIQ, ASSIGNORS T0 THE B. F.YORK, N. Y., A CORYORATIN OF NEW YORK.

ABRADING MACHINE.

Application tiled April 11, 1922. Serial No. 551,487.

To all whom. t may concern:

lie it known that we, Ronnni B. AMnLER :mil Grenen F. lVinsoN, citizensof the United States, residing et hron, in the l" vounty ol Summit andState of Ohio, have invented :i certain new and useful AnredingrMachine, of which thefollowingl is a specification. v This inventionrelates to ehreding nia.- l chinos and more particularly to apparatusfor albi-ailing annular articles such es the reinforcing members culledbeads which ere commonly used in pneumatic tires. A common type of beadis composed of an inexf tensible metal core, :i body of rubber thereon:zuil :i rubberizml fonric cover, the whole being nsniilly oltrinng'nlnc` cross-Section, und after partial vnli'fnnization the headrequiresto lie bufed in order to roughen the "4 inliric cover multhereby provide for. goed' adhesion between the heed and the rubberrement with which it is coated before it is incorporated in the tire,Uur general object, is to provide a. rapid, f' ellicient andeconomically constructed inachine, whereby labor and expense may besaved und u high quality in the product obtained. More speeiiic objectsare to provide )un improved machine in `which ahrading wheels of rigidmateriel such as cal-horenluin may he used es the ahruding elementswithout danger of breakage and injury to the operator from flyingparticles of such n. wheels. and to provide improved means for guidingthe work past such wheels in obrading contact therewith end forautomatically so ret-arding it es to produce e uniform relative movementbetween the working sur- .:o faces of the abreding wheels and the work.

Of the accompanying drawings:

Fig. 1 is a front elevation of a preferred embodiment of our invention,in operative position, as viewed from the position i the 45 operator,with parts broken away and parts in section.

Fig. 2 is a fragmentary view of a powercylinder and adjacent; parts.

Fin'. '3 is a similar view of parts of the 50 machine in inoperative orwork-receiving position.

Fig. 4 is a. detached plan of part of the machine. a part thereof beingsectioned'on line 4-4 of Fig. 2.

5f* Fig. 5 is a fragmentary view of a latching device for thepower-applyin mechanism, in latching position, end aqecent parts.

Fig. 6 is e section on line 6-6 of .Fig 5. Y Fig. 7 is e side elevationof the principal parte oi the machine, in operative position.

Fi f. B is a similar view of a. part shown in Fig. i', in inoperative orWorlnreceiving position.

In the drawings, lll is an upright frame in which are journeledparallel, horizontal shafts 11, l2 for a. pair of abrading wheels i3,14, preferably of, carborundum, seid wheels being seciired an alignmentwith each other on the overhanging or projecting front ends of saidshafts, so that they may freely receive between them the work, hereconsisting of annuler tire-beads 15, 15, when the letter ere movedaxially from the front of the machine into association with scidahreding wheels. The parallel shafts 11, 12 are oiiset from earch otherboth vertically end horizontally, as is clearly Shown in l und 3, sothat the ehredin A" wheels 13. le secured thereon are adepte to contactthe work et different stations, without longer of Contact with eachother or with any other part of the machine, the Work beingP of suchstillness or resilience that it een held in ebreding contact with saidwheels b v guide rollers, hereinafter described, contacting the work atpoints somewhat removed from the abra/ding wheels. Thelower inbreidingwhee1 14 is formed with n cylindrical working surface, to correspond tothe cylindrical inner feces of the beads. while the upper wheel, 13, isformed with circumferential grooves 13, 13, to fit the other two facesof each bead, as will be understood upon reference to Fig. 7, where itwill be seen that the beads, 15, which ere endless, are of triangularcross-section, thus having three annular feces to he nbreded.

For supportingP the beads 15 and carrying them into association with theehreding wheels, and nressimr them against the latter, we provide obracket-like carriage 16 slidablv mounted upon a horizontal rnidingendsupporting ber 17 and a rock shaft 1S. projecting from the front of themechine, the upper end of seid carriage or slid ing' hracket heineformed with n bearing' in which is rotatably mounted n short shaft 19.on the rear end of which is secured aitwoarmed lever 20. 21. 0n theouter end of the arm of said lever is journaled s, guide HIS connectedby e. chain 57, passing downward, past n roller 58, to n treadle 59.

The roller heretofore mentioned is formed with Work-spacing roorves 25",25 (Fig. 4), Iand is adapted to )e lowered onto the work and to ridethereon and hold it down against the abi-aiding wheel 1.4, shown in Fig.1, when the roll 22 is lowered nr d the roller Q3 raised, said roller 25being journnled at the tree end of n lever 6() extending from arock-shaft 61 Ymounted in n bracket 62 extendinf from the frame 10. Forturning said reali-,shaft an arm 63 is se cured to the rear end thereofand connected` by a link 64 with the load end of the lever 48. 65 is anadjustable stop-bolt on the bracket 62 adapted to beI contacted by anarm 66 secured to the rock-shaft 61 to limit the downward movement ofthe roller 25, the link 64 having n pin-snd-slot connection with the arm63. es indicated at 64, to com pensate for adjustment of the stopbolt65.

For driving the abradinp,r Wheels 13, 14, the shaft 11 of the former ispr vided with a driveepulley 67 and a drive be t 63 thereon, and with agear 69 meshed with a gear 70 secured on the shaft. 12 of the abradingwheel 14.

The roller 26 heretofore mentioned is n hold-back roll, adapted toretard the progress o1 the work past the abrading wheels and therebyobtain the necessaryr relative movement of the latter on the work, saidwheel being formed with circumferential grooves 26", 26,with spiked orronghened surfaces (Fig. 7 fitting the upper sides of the beads 15. Saidroller 26 1s secured to the front end of a shaft 71 journaled in e heavybearing member 72 pivoted on the shaft 11, and ,is adapted'i'to bedriven ata slower speed than the abrad'ing rolls, or rather to be heldback. by a large sprocket 73 secured to the rear end of its shaft 71 andconnected by a sprocketIl chain 74 with a small sprocket 75 Secured upone common hub with a. gear 76 journaled upon a stubshaft 77 rejectingfrom the frame 10, said ,gear 76 eing meshed with a smaller geur 78secured upon the rear end of the shaft 12.

The bearing member 72 is adapted to restupon a, art of the frame 10,with'the holdlbeck ro ler 26 in the position shown in Fig.

3, when the roller 23 is lowered for thememoval of the Work, and isadapted to ride upon the Work, under the Weight of seid Hearing member`when the work is raised by the roller 23 into abradingir osition, asshown in Fig. l. To relieve t e pressure of said hold-back roller uponthe Work, in case it is found excessive, the bearing member 72 isconnected by e push-link 79 with a vertical slide-bar 80 mounted on theframe lOLand said slide bar is connected by a heinV 81, passing over apulley 82, to a counter-weight S3 for said bearing member,

In the operation of the device. assuming that the machine is as shon'nin Fig. l. :in

as viewed in Figs. l und 3. lifting,r the rollers y 22 and 25 andlowering the roller 221 :ind ,guide pins 24. 24, while the foot fw oftheV lever 39 passes to the left until it clears the transverse slot 17bso :is to slide in the lungh tudinnl slot 17 of the bar 147. the partsthen being as shown in lfig. 3. As soon :is said foot 39a has thuscleared said slot 1T". the. spring 27 and the weight 3S immediatelyslide the carriage 16, with the finished work thereon, away from theframe 1l). upon thc bar 17 and rock-shaft 18. As the carriage startsoutward, the stud 561m ves the latching lever 52, which thereupon.ixupeiled by its spring 54, engages the nrnl 5l to prevent turning ofthe rock-shaft 13 in the opposite direction While the carriage is out.

Then the carriage luis renrlied il outermost position, where it isstopped by the collar 44, the operator removes the bullcd beads andreplaces them with beads to be buffed, by simply hanging the hitter iupon the rollers 22, 23. between [he guideposts 24, 24, andininiedintcly before or after doing so he exhausts the upper end andcharges the lower end of the cylinder 45. He then depresses the treadle30, thereby pulling the carriage 16, against the action of the spring 27and weight. 38, back to abrading position, where the f oot 39 of thelever 39 is free to slide in the4 transverse slot 17", und the stud 56,striking the latching lever 52, releases the rock shaft 18, which ispromptly turned by the previously charged cylinder 45, and said cylinderalso lowers the roller 25 onto the Work, While the roller 22 is loweredand the roller 23 raised, to bring the work against the abrading wheels13, 14 and the hold-back roller 26, which are being driverr by the belt68, and tl e several parts of the machine are again in the positionsShown in Fig. 1.

The machine is rapid in operat'on, no

time being lost between the tilting of the Work-supporting rolls out ofpressi position and the outward movement ,of the carriage under actionof the spring 27 and Weight 38, nor between the inward movement of thecarriage and the tilting of the worksuporting rolls to abrading positionunder action of the cylinder 45. The abradingr wheels are in no danother parts of the machine which might cause them to fly to pieces, norto be'jammed by the Work inthe axial movement of the latter, since thework suporting rollers and associated parts mounted on the carriagecannot be tilted into abrading or pressin position until/the carriage16` has complete r of contacting I to cause the work to work as thelatter passes between them,

, between said -wheels its inward movement. The hold-backV roller 26being driven ata constant speed relative to that of the abrading wheels,a uniform action upon the work, and consequently an improved product, isobtained. The machine may readily be adapted to abrade annular articlesof different sizes, and is largel automatic.

Mo ifications may be resorted to within the scope of our invention, andwe do not wholly limit our claims to the specific construction shown.

We claim: Y

1. In an abrading machine for a resilientlyl flexible strip of material,the combination of a pair of abradin wheels spaced apart longitudinallyof tie work, said Wheels bein adapted simultaneously to abraderespective faces of the work as the latter passes between them, awork-engaging roller spaced from said wheels longitu inal'ly of the Workandso positioned as be progressively liexed against said whees asitpasses between them, driving means for said abrading wheels, and meansassociated with said driving means for causing the work to pass saidwheels at a determinate, uniform s ed with relation to the speed of saidwhee s.

2. In an abrading machine for a resiliently exible, annular article,thecombination of a pair of overhan ing` abrading wheels spaced apartlongiturinally of the work, said wheels being adapted simultaneously toabravde respective` faces of yth an a work-supporting and guidingstructure pivotally mounted adjacent said wheels and on an axissubstantially arallel thereto, said structure being ada te in oneangular; position on its pivot to old an annular article hung thereonwith an upperV reach of the article passin between but ont of contactwith said vv eels, gular position tol hold the article flexed againstboth of said wheels.

3. In an abrading machine for 'a resiliently iiexible strip of material,the combination of a pair of abradi wheels spaced apart longitudinallyof vt e work, said wheels being adapted rslmultaneously to abi-aderespective faces latter krpasses between them, and a worksupporting andeguiding structure having one position in Whichit is adapted to supportthe work with a reach thereof passing but. outof contact therewith, andanother position in which it is adapted to hold the work longitudi-`nally flexed against said wheels, said structure extending to, andengaging thexwork only at, points spaced from said wheels longitudinallyof the work.

4. In an abrading machine for annular articles, the combination .of apair of suband -n another anA of the work as the4 stantially parallel,overhanging abrading wheels s aced apart longitudinally of the work anadapted simultaneously to abrade respective faces of the-Work as thelatter passes between them, a Work-carrying and guiding ,structuremounted for movement, axiall?7 of said wheels, into and out ofassociation with the latter, and for pivotal movement about an axisparailel with the axis of said wheels, said structure thus being adaptedto carry the work axially into association with said Wheels, with areach of the work lying 'between said wheels but out of contacttherewith, and then to tilt -the Work with respect to said wheels tobring respective faces of the work intoY 'abrading contact with therespective wheels.

5. In an'abrading machine for an annular article, the combination of apair of spaced apart, overhanging abrading wheels having annularabrading surfaces on their outer peripheries, the abrading surface ofcach boing aligned with that of the other, a pair of spaced apart guidemembers adapted pendulously to support said annular article by con tactwith its inner periplierymeans for moving said guide members axiallytoward said abradingwheels to carry a reach of said article between thelatter, and means for then movingsaid guide members oppositely,4 indirections transverse to their first movement to bring opposite sides ofsaid reach of the article into contact with the respective abradin'gwheels.

6. In an abrading machine for an annular article, thecombination of apair of projecting abrading wheels adapted simultaneousl to abradeopposite sides at ifierent stations thereon, guide rollers for the workspaced apart from said abrading wheels and adapted to hold the workagainst the latter, and a projecting hold- -back roller for the work,said parts being ada ted to permit the free insertion of the wor betweensaid abrading wheels.

7. In an abrading machine for an annular article, the combination of apair of parallel shafts, a pair of aligned abrading wheels secured tosaid shafts respectively and adapted to abrade opposite sides of thework, a hold-back roller for the work, a mounting for said rollerpivoted concentrically with one of said shafts, and driving meansoperatively connecting said shaft with said roller. said abrading wheelsand said hold-back roller being adapted freely to receive the work froman axial direction.

8. In an abrading machine for resilient, endless tire beads, thecombination otv an abrading Wheel formed of rigid material and mountedin a fixedposition and adapted to abradethe inner eriphery of the bead.and an abrading wv eel formed of rigid material and mounted in a fixedosition at a distance from the first said abra ing wheel of the workapart ebreding wheels adapted to abrede Fnsite sides of the Werk ami toreceive t e Wheels in intfiece he Work :and remove ii tile-"efroi, aWork sngmerting and guiding pivote on saifi i be turned 0n press thework a einst Said wheels after it has been inserted atter, positivemeans foe preventing the turning of said structure to pressing positionwhile seid carriage iS out of abradin positinn, and positu the movement,of said carriage out ing: positien whiie said structure is ing posiion.

In en ebreding machine for a re siliently fiexibie strip of materiel,Ythe combination of e i ei? ef abrading wheels spaced apartiongitufiinaiiy of the work, said wheels bein ada, ted simultanea tobredere specxe p latter passes said abrad wheeis longitudine4 y of thebeing so positioned as to work te be progressively fiexed as it i rollerand said wheels, and there yl to be held in ebreding contact with saidwheels, a rollerndapted to engage the work tn control the s of Yi passapast said abrading Whee s, and positive driv operatively connecting theAIasi'. said roller and sei abrading wheels, 4seid means being lidaptedto insure uniform relative movement of the work and the abrading wheels.

In witness whereof we have hereunto eet nur hands this 7 dey 0f April,1922.

` l ROBERT R. AMBLER. SEORGE F. WILSON.

and V therefrom work, said relier cause the

